Flint and steel is a traditional method of starting a fire, using a piece of flint, a hard rock, and a piece of steel. When the steel is struck against the flint, it creates sparks. These sparks can ignite a small pile of dry material, such as tinder, to start a fire. This technique has been used for centuries, dating back to ancient times. It is a reliable way to create fire without modern conveniences like matches or lighters. Flint and steel is still popular among campers and survivalists who appreciate its simplicity and effectiveness.